<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Vue Computed</title>
</head>
<body>
  <div id="app">
    <p>顺序: {{name}}</p>
    <p>逆序: {{reversedName}}</p>
  </div>
  <script src="https://cdn.bootcdn.net/ajax/libs/vue/2.6.11/vue.min.js"></script>
  <script>
    new Vue({
      el: '#app',
      data: {
        name: 'Miracle'
      },
      computed: {
        reversedName() {
          return this.name.split('').reverse().join('')
        }
      }
    })
  </script>
</body>
</html>